PDH_BROWSE_DLG_CONFIG_HW structure (pdh.h)
The PDH_BROWSE_DLG_CONFIG_H structure is used by the PdhBrowseCountersH function to configure the Browse Performance Counters dialog box.
Syntax
typedef struct _BrowseDlgConfig_HW {
DWORD bIncludeInstanceIndex : 1;
DWORD bSingleCounterPerAdd : 1;
DWORD bSingleCounterPerDialog : 1;
DWORD bLocalCountersOnly : 1;
DWORD bWildCardInstances : 1;
DWORD bHideDetailBox : 1;
DWORD bInitializePath : 1;
DWORD bDisableMachineSelection : 1;
DWORD bIncludeCostlyObjects : 1;
DWORD bShowObjectBrowser : 1;
DWORD bReserved : 22;
HWND hWndOwner;
PDH_HLOG hDataSource;
LPWSTR szReturnPathBuffer;
DWORD cchReturnPathLength;
CounterPathCallBack pCallBack;
DWORD_PTR dwCallBackArg;
PDH_STATUS CallBackStatus;
DWORD dwDefaultDetailLevel;
LPWSTR szDialogBoxCaption;
} PDH_BROWSE_DLG_CONFIG_HW, *PPDH_BROWSE_DLG_CONFIG_HW;
Members
bIncludeInstanceIndex
If this flag is TRUE, the dialog box includes an index number for duplicate instance names. For example, if there are two cmd instances, the instance list will contain cmd and cmd#1. If this flag is FALSE, duplicate instance names will not contain an index number.
bSingleCounterPerAdd
If this flag is TRUE, the dialog returns only one counter. If this flag is FALSE, the dialog can return multiple selections, and wildcard selections are permitted. Selected counters are returned as a MULTI_SZ string.
bSingleCounterPerDialog
If this flag is TRUE, the dialog box uses an OK and Cancel button. The dialog returns when the user clicks either button. If this flag is FALSE, the dialog box uses an Add and Close button. The dialog box closes when the user clicks the Close button. The Add button can be clicked multiple times. The Add button overwrites the previously selected items with the currently selected items.
bLocalCountersOnly
If this flag is TRUE, the dialog box lets the user select counters only from the local computer (the path will not contain a computer name). If this flag is FALSE, the user can specify a computer from which to select counters. The computer name will prefix the counter path unless the user selects Use local computer counters.
bWildCardInstances
If this flag is TRUE and the user selects All instances, the counter path will include the wildcard character for the instance field.
If this flag is FALSE, and the user selects All instances, all the instances currently found for that object will be returned in a MULTI_SZ string.
bHideDetailBox
If this flag is TRUE, this removes Detail level from the dialog box so the user cannot change the detail level of the counters displayed in the dialog box. The detail level will be fixed to the value of the dwDefaultDetailLevel member.
If this flag is FALSE, this displays Detail level in the dialog box, allowing the user to change the detail level of the counters displayed.
Note that the counters displayed will be those whose detail level is less than or equal to the current detail level selection. Selecting a detail level of Wizard will display all counters and objects.
bInitializePath
If this flag is TRUE, the dialog highlights the counter and object specified in szReturnPathBuffer when the dialog box is first displayed, instead of using the default counter and object specified by the computer.
If this flag is FALSE, this selects the initial counter and object using the default counter and object information returned by the computer.
bDisableMachineSelection
If this flag is TRUE, the user cannot select a computer from Select counters from computer.
If this flag is FALSE, the user can select a computer from Select counters from computer. This is the default value. The list contains the local computer only unless you call the PdhConnectMachine to connect to other computers first.
bIncludeCostlyObjects
If this flag is TRUE, the counters list will also contain costly data—that is, data that requires a relatively large amount of processor time or memory overhead to collect.
If this flag is FALSE, the list will not contain costly counters. This is the default value.
bShowObjectBrowser
If this flag is TRUE, the dialog lists only performance objects. When the user selects an object, the dialog returns a counter path that includes the object and wildcard characters for the instance name and counter if the object is a multiple instance object. For example, if the "Process" object is selected, the dialog returns the string "\Process(*)*". If the object is a single instance object, the path contains a wildcard character for counter only. For example, "\System*". You can then pass the path to PdhExpandWildCardPath to retrieve a list of actual paths for the object.
bReserved
hWndOwner
Handle of the window to own the dialog. If NULL, the owner is the desktop.
hDataSource
Handle to a data source returned by the PdhBindInputDataSource function.
szReturnPathBuffer
Pointer to a MULTI_SZ that contains the selected counter paths.
If bInitializePath is TRUE, you can use this member to specify a counter path whose components are used to highlight entries in computer, object, counter, and instance lists when the dialog is first displayed.
cchReturnPathLength
Size of the szReturnPathBuffer buffer, in TCHARs. If the callback function reallocates a new buffer, it must also update this value.
pCallBack
Pointer to the callback function that processes the user's selection. For more information, see CounterPathCallBack.
dwCallBackArg
Caller-defined value that is passed to the callback function.
CallBackStatus
On entry to the callback function, this member contains the status of the path buffer. On exit, the callback function sets the status value resulting from processing.
If the buffer is too small to load the current selection, the dialog sets this value to PDH_MORE_DATA. If this value is ERROR_SUCCESS, then the szReturnPathBuffer member contains a valid counter path or counter path list.
If the callback function reallocates a new buffer, it should set this member to PDH_RETRY so that the dialog will try to load the buffer with the selected paths and call the callback function again.
If some other error occurred, then the callback function should return the appropriate PDH error status value.
dwDefaultDetailLevel
Default detail level to show in the Detail level list if bHideDetailBox is FALSE. If bHideDetailBox is TRUE, the dialog uses this value to filter the displayed performance counters and objects. You can specify one of the following values:
szDialogBoxCaption
Pointer to a null-terminated string that specifies the optional caption to display in the caption bar of the dialog box. If this member is NULL, the caption will be Browse Performance Counters.
Remarks
Each time the Add button is clicked, the szReturnPathBuffer buffer contains the selected counter and the pCallBack callback function is called. The callback function should call the PdhAddCounter function for each counter in the buffer.
Note
The pdh.h header defines PDH_BROWSE_DLG_CONFIG_H as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | pdh.h |